import 'package:flutter/material.dart';

import '../../core/theme/tokens.dart';
import '../../core/ui/app_icons.dart';
import '../../core/ui/relative_time.dart';
import '../home/home_screen.dart' show formatPop;
import 'inside_data.dart';

/// INSIDE 화면군이 같이 쓰는 시안 조각 — 아이콘 · 글자 · 작성자 줄 · 현상금 칩 · 반응 줄.
///
/// 아이콘은 Figma Iconset(Lucide) 을 3배 PNG 로 둔 것이다. 공용 [AppIcons] 로 올릴 때까지
/// 여기 둔다(디자인 일치 2단계 「공유 변경 요청」).
/// 시안 INSIDE 의 회색 단계.
abstract final class InsideColors {
  static const stat = Color(0xFF4F4F4F);
  static const avatar = Color(0xFFD9D9D9);
  static const rule = Color(0xFF1A1A1A);
  static const hint = Color(0xFF6B6B6B);
  static const chipLabel = Color(0xFFD5D7D9);
}

/// 42dot Sans · 자간 -2.5% · 행간 130%(시안 INSIDE 본문 기본값).
TextStyle insideText(
  double size, {
  FontWeight weight = FontWeight.w500,
  Color color = AppColors.onCosmic,
  double height = 1.3,
}) => TextStyle(
  fontFamily: AppFonts.body,
  fontSize: size,
  fontWeight: weight,
  height: height,
  letterSpacing: -0.025 * size,
  color: color,
);

/// 작성자 닉네임 — ABeeZee 12(한글은 42dot 대체).
const insideNameStyle = TextStyle(
  fontFamily: AppFonts.display,
  fontFamilyFallback: [AppFonts.body],
  fontSize: 12,
  height: 1.3,
  letterSpacing: -0.3,
  color: AppColors.onCosmic,
);

/// 첨부 이미지. `assets/` 로 시작하면 번들 표본이다.
ImageProvider insideImage(String url) =>
    url.startsWith('assets/') ? AssetImage(url) : NetworkImage(url);

/// 아바타 26 · 이름 · (있으면) 시각 줄.
class InsideAuthor extends StatelessWidget {
  const InsideAuthor({super.key, required this.name, this.meta});

  final String name;
  final String? meta;

  @override
  Widget build(BuildContext context) => Row(
    mainAxisSize: MainAxisSize.min,
    children: [
      Container(
        width: 26,
        height: 26,
        decoration: const BoxDecoration(
          color: InsideColors.avatar,
          shape: BoxShape.circle,
        ),
      ),
      const SizedBox(width: 9),
      Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        mainAxisSize: MainAxisSize.min,
        children: [
          Text(name, style: insideNameStyle),
          if (meta != null)
            Text(meta!, style: insideText(10, color: AppColors.onCosmicMuted)),
        ],
      ),
    ],
  );
}

/// 현상금 칩 — 시안 58×24 · 모서리 2 · 번개 + 「500 P」. 채택이 끝난 질문은 회색이다.
class InsideBountyChip extends StatelessWidget {
  const InsideBountyChip({super.key, required this.question});

  final InsideQuestion question;

  @override
  Widget build(BuildContext context) {
    final c = question.isSolved ? InsideColors.stat : AppColors.cosmicBlue;
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
      decoration: BoxDecoration(
        color: c.withValues(alpha: 0.1),
        borderRadius: BorderRadius.circular(2),
      ),
      child: Row(
        mainAxisSize: MainAxisSize.min,
        children: [
          ImageIcon(AppIcons.bolt, size: 10, color: c),
          const SizedBox(width: 4),
          Text(
            '${formatPop(question.bountyPop)} P',
            style: insideText(12, color: c),
          ),
        ],
      ),
    );
  }
}

/// 좋아요 · 댓글 · 조회 줄. 0 이면 숫자를 빼고 아이콘만 둔다(시안 「아미보이」 카드).
class InsideStats extends StatelessWidget {
  const InsideStats({
    super.key,
    required this.question,
    this.size = 14,
    this.textSize = 12,
    this.color = InsideColors.stat,
  });

  final InsideQuestion question;
  final double size;
  final double textSize;
  final Color color;

  @override
  Widget build(BuildContext context) {
    Widget stat(ImageProvider icon, int n) => Row(
      mainAxisSize: MainAxisSize.min,
      children: [
        ImageIcon(icon, size: size, color: color),
        if (n > 0) ...[
          const SizedBox(width: 4),
          Text(
            formatReaction(n),
            style: insideText(textSize, color: color, height: 1),
          ),
        ],
      ],
    );
    return Row(
      children: [
        stat(AppIcons.heart, question.likeCount),
        const SizedBox(width: 12),
        stat(AppIcons.messageCircle, question.answerCount),
        const SizedBox(width: 12),
        stat(AppIcons.eye, question.viewCount),
      ],
    );
  }
}